Table 3.
Polysomnography sleep measures (Mean ± SEM), corrected for recording quality rating.
| AMC (n = 14) | BSO+ERT (n = 15) | BSO (n = 16) | SM (n = 17) | |
|---|---|---|---|---|
| Total sleep time (hour) | 6.36 ± 0.21 | 6.47 ± 0.20 | 6.56 ± 0.20 | 6.61 ± 0.20 |
| Sleep efficiency (%) | 90.01 ± 1.16 | 91.31 ± 1.10 | 87.29 ± 1.07a | 86.37 ± 1.06c,d |
| Sleep latency (min) | 12.56 ± 1.97 | 11.92 ± 2.62 | 27.35 ± 5.02a,b | 33.78 ± 5.96c,d |
| %N1 | 7.92 ± 0.76 | 5.44 ± 0.72 | 6.53 ± 0.70 | 7.27 ± 0.69 |
| %N2 | 64.17 ± 2.36 | 65.64 ± 1.30 | 66.27 ± 1.39 | 63.05 ± 0.99 |
| %N3 | 5.03 ± 1.25 | 5.92 ± 1.19 | 5.75 ± 1.15 | 4.66 ±1.14 |
| %REM | 23.27 ± 1.30 | 22.95 ± 1.24 | 21.53 ± 1.20 | 24.66 ± 1.18 |
| Arousal index (#arousals/hour) | 4.61 ± 0.45 | 4.39 ± 0.42 | 4.93 ± 0.41 | 4.48 ± 0.40 |
| WASO (min) | 28.25 ± 4.06 | 25.60 ± 3.86 | 27.64 ± 3.74 | 29.54 ± 3.69 |
AMC, age-matched premenopausal controls; BSO, bilateral salpingo-oophorectomy; ET, estradiol-based hormone replacement therapy; SM =spontaneous menopause; WASO, wake after sleep onset. aBSO vs BSO+ET, bBSO vs AMC, cSM vs AMC, dSM vs BSO+ERT, SM vs BSO, BSO+ERT vs AMC; p < .05.
"#" denotes "number" as in Table 2.